GMOS-S Gain and Read Noise (Old)

The table below gives gain/read-noise values for the GMOS EEV CCDs measured in September 2006 after the replacement of the video boards installed in the SDSU controller. High and low gain settings for the best amplifiers (3-amp mode) are highlighted for both slow and fast readout modes.Note: GMOS South data obtained before September 1, 2006 should use the older values (see bottom)

SDSU Gain number

1 (High)

2 (Low)

5 (High)

6 (Low)

CCD

Rate

Amp

Gain

Noise

Gain

Noise

Gain

Noise

Gain

Noise

1

F

L

5.054

6.84

2.408

4.49

1

F

R

5.253

6.54

2.551

5.07

1

S

L

4.954

5.70

2.372

3.98

1

S

R

4.862

5.19

2.403

4.01

2

F

L

5.051

7.35

2.295

4.42

2

F

R

4.954

11.37

2.288

5.03

2

S

L

4.532

4.81

2.076

3.85

2

S

R

4.592

4.96

2.131

3.83

3

F

L

4.868

8.56

2.264

4.63

3

F

R

4.833

7.88

2.260

4.09

3

S

L

4.381

4.81

2.056

3.27

3

S

R

4.411

4.34

2.097

3.16

Ave

F

5.002

8.09

2.344

4.622

Ave

S

4.622

4.968

2.189

3.683

Rate: S=SLOW, F=Fast

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Older values (before September 1, 2006)

The table below gives the gain/readnoise values for the GMOS
EEV CCDs operating with the SDSU controller. These values should be used to reduce GMOS South data obtained
before September 1, 2006. High and low
gain settings for the best amplifiers (3-amp mode) are highlighted for
both slow and fast readout modes.